Brandie Smith with the National Zoo added, "The cub has a fat little belly. It's very active. It's very vocal. If it needs anything it definitely lets Mei Xian and the rest of us know... We're starting to see that it's a little bit fuzzy and it's got those great black and white markings that are coming in."

The cub still does not have a name. Zoo officials say the name will be decided in collaboration with Chinese colleagues.